EP 0918289 A2 19990526 - Data transfer control apparatus, data transfer control system and data transfer control method
Title (en)
Data transfer control apparatus, data transfer control system and data transfer control method
Title (de)
Datenübertragungssteuergerät, Datenübertragungssteuersystem und Datenübertragungssteuerverfahren
Title (fr)
Dispositif de commande de transfert de données, système de commande de transfert de données et procédé de commande de transfert de données
Publication
Application
Priority
JP 31756097 A 19971119
Abstract (en)
Data transfer mode between a plurality of circuit modules connected to a data bus is dynamically switched between a time division, space-division multiplexing and so forth for improving data transfer efficiency. For example, the data bus of 4n bit width is used as two data bus of 2n bit width in certain period (transfer mode "b"), as one data bus of 4n bit width in a certain period (transfer mode "a"), and further as four data bus of n bit width in a further certain period (transfer mode "c"). A command of switching of the transfer mode is performed by a transfer control circuit common to respective circuit modules. In response to command of the transfer mode, switching of the bit width of data and switching of the bus connecting condition are performed by the bus adapter circuit. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 13/36 (2006.01); G06F 13/40 (2006.01)
CPC (source: EP US)
G06F 13/4018 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0918289 A2 19990526; EP 0918289 A3 20010411; CA 2252753 A1 19990519; JP H11149444 A 19990602; US 6513078 B1 20030128
DOCDB simple family (application)
EP 98120590 A 19981030; CA 2252753 A 19981103; JP 31756097 A 19971119; US 18116798 A 19981028